100% leak proof, tamperproof and true 95kpa meets DOT and IATA requirements. We at DaklaPack recently designed and patented our own 95kpa Safetybags�® and have had them fully certified by the BVI. DaklaPackâ??s 95kPa transport bags are ideal to use as a secondary watertight receptacle in accordance with DOT and IATA regulations for shipping Biological Substances. DOT and IATA shipping regulations require that UN3373 Biological Substance, Category B specimens are transported in either a primary container or secondary packaging that has passed the 95kPa pressure differential test. Custom sizes and solutions can be made available - contact us for expert advise.